At a particular college, students have several options for purchasing textbooks. The options and the proportion of students choosing each option are shown in the table at the bottom of this page. If a student at this college is selected at random from this college, what is the probability that the student
a. purchased all print books online?
b. purchased all print books?
c. purchased some e books or all e books?
d. did not purchase all print books from the campus bookstore? |

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